155674947 has 8 divisors (see below), whose sum is σ = 213176656. Its totient is φ = 100978272.

The previous prime is 155674931. The next prime is 155674993. The reversal of 155674947 is 749476551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155674947 - 2⁴ = 155674931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155674896 and 155674905.

It is not an unprimeable number, because it can be changed into a prime (155678947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701128 + ... + 701349.

It is an arithmetic number, because the mean of its divisors is an integer number (26647082).

Almost surely, 2^155674947 is an apocalyptic number.

155674947 is a deficient number, since it is larger than the sum of its proper divisors (57501709).

155674947 is a wasteful number, since it uses less digits than its factorization.

155674947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402517.

The product of its digits is 1058400, while the sum is 48.

The square root of 155674947 is about 12476.9766770640. The cubic root of 155674947 is about 537.9471060430.

The spelling of 155674947 in words is "one hundred fifty-five million, six hundred seventy-four thousand, nine hundred forty-seven".